1123201113 has 32 divisors (see below), whose sum is σ = 1615610880. Its totient is φ = 692408640.

The previous prime is 1123201097. The next prime is 1123201127. The reversal of 1123201113 is 3111023211.

It is a happy number.

It is not a de Polignac number, because 1123201113 - 2⁴ = 1123201097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1123201092 and 1123201101.

It is not an unprimeable number, because it can be changed into a prime (1123201133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 246070 + ... + 250592.

It is an arithmetic number, because the mean of its divisors is an integer number (50487840).

Almost surely, 2^1123201113 is an apocalyptic number.

It is an amenable number.

1123201113 is a deficient number, since it is larger than the sum of its proper divisors (492409767).

1123201113 is a wasteful number, since it uses less digits than its factorization.

1123201113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4669.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1123201113 is about 33514.1927099550. The cubic root of 1123201113 is about 1039.4872697580.

Adding to 1123201113 its reverse (3111023211), we get a palindrome (4234224324).

The spelling of 1123201113 in words is "one billion, one hundred twenty-three million, two hundred one thousand, one hundred thirteen".